But conman Trump (or his co-conspirator, Sean Spicer) might say that the comment in the Oval Office was about speeches, not tweets - that he never saidin a speech that he'd repeal and replace Obamacare.

When we win on November 8th, and elect a Republican Congress, we will be able to immediately repeal and replace Obamacare. I will ask Congress to convene a special session.

For the record "immediately" is a shorter time span than "64 days."

The Daily Press of Newport News Virginia reported this on September 20, 2016:

On Trump's first day in office "he is going to repeal every single Obama executive order, he is going to repeal Obamacare … and on day one, we're going to end the war on coal once and for all," [then-Vice President candidate Mike} Pence said.

Day One. Immediately. And now Trump wants us all to believe that he never said any of that.